Subaru Justy Headlight Bulb Size

Subaru Justy headlight bulbs utilize 9004 and H6054 sizes for both high and low beam applications, with these bulb sizes representing the specifications across the model line. The replacement chart covers vehicle production spanning 1987 to 1994, detailing bulb size requirements for the noted period.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

High Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1989-1994	9004	HB1	Check Price
1987-1988	H6054	H6054	Check Price

Low Beam Headlight

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1989-1994	9004	HB1	Check Price
1987-1988	H6054	H6054	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Dual-filament halogen bulb with P29t base. 12V, 65W/45W.	9004	Check Price
ANSI standard (US & Canada). 5x7-inch rectangular sealed beam unit. Not a replaceable bulb — the entire unit is replaced. 12V.	H6054	Check Price

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Additional Notes

The 9004 is a dual-filament halogen bulb, meaning a single unit contains both the high beam and low beam filaments. It operates at 12V and draws 65W on the high beam filament and 45W on the low beam filament, with a P29t base connector.
The H6054 is a 5x7-inch rectangular sealed beam unit rather than a replaceable bulb. The lens, reflector, and filament are fused into one assembly, so the entire unit is replaced when the light fails.
The Subaru Justy used the H6054 sealed beam unit for both high and low beam functions in 1987-1988, with both positions sharing the same sealed beam specification across those years.
From 1989-1994, the Justy transitioned to the 9004 halogen bulb for both high and low beam positions, replacing the sealed beam format used in earlier years.
Because the 9004 handles both beam functions through its dual filaments, it serves as the sole headlight bulb type for each position in the 1989-1994 model years, with no separate bulb required for the alternate beam.
Both the 9004 and H6054 conform to ANSI standards applicable in the United States and Canada, indicating compliance with North American headlight regulations for the respective years.
The H6054 and 9004 are not interchangeable. The sealed beam format of the H6054 and the socketed halogen format of the 9004 involve fundamentally different housing and mounting configurations.